Move bd_pressure.cfg and TEST_SPEED into the repo

All macros now come from this repo. bd_pressure.cfg ([bdpressure bd_pa]
and the vendor PA_CALIBRATE macros) and Macros/TEST_SPEED.cfg were loose
files in ~/printer_data/config.

PA_CALIBRATE no longer sets Z back to z_current at the end: it was read
before the test ran, so a Z hop in the G28 XY (Beacon home_z_hop) would
leave Klipper believing the nozzle is lower than it is. Z is never switched
off or moved by the test, so it keeps its position without that line.
The ACC_WALL bug (read from ACCEL_TO_DECEL, always 4000) is documented,
not fixed: the cached PA values were measured at 4000.

printer.cfg must drop [include bd_pressure.cfg] and Macros/macros.cfg its
TEST_SPEED include, else the old copies (included later) still win.

Reference values from the load-check-afc branch and from the guard and
Z check tests added to CLAUDE.md.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

macros/klipper-macros.cfg

@@ -24,6 +24,7 @@
 [include print/homing.cfg]
 [include print/idle_timeout.cfg]
 [include print/print_start_end.cfg]
+[include print/test_speed.cfg]          # TEST_SPEED: skipped-steps test
 
 # Heating
 [include heating/bed_fans.cfg]
@@ -39,6 +40,7 @@
 [include afc/purge_until_empty.cfg]
 
 # Pressure advance per lane/spool (bd_pressure + Spoolman)
+[include pressure_advance/bd_pressure.cfg]   # [bdpressure bd_pa] and the vendor PA_CALIBRATE macros
 [include pressure_advance/bd_pa_spoolman.cfg]
 
 # Spoolman